Inputting data into a website question

[grocery_stocker]

Let's say that I have a file with the following words
shirt
jeans
belt
jacket

Now I want to be able to enter these words into the search function at
the following website..

http://oldnavy.gap.com/?redirect=true

Is there some method in the urllib method that would allow me to do
this? I tried googling this, but all I found was stuff related to CGI.